ASTROSAT CZTI

Data Quality Report

Orbit 13971

Creation date: 2024-06-27T16:48:36.341584
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A04_225T01_9000002062_13971cztM0_level2.evt modeM0/AS1A04_225T01_9000002062_13971cztM0_level2_quad_clean.evt
Size (bytes)526,357,440112,806,720
Size502.0 MB 107.6 MB
Events in quadrant A3,700,684718,041
Events in quadrant B3,882,248742,665
Events in quadrant C3,761,486721,121
Events in quadrant D4,057,757683,272

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164063
B0167642
C0163532
D0175622

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7927410.517220%
B7927881.110130%
C7927410.517220%
D7927700.883058%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 9138 7930 1 1 0.01% 0.01%
B 9138 7930 12 12 0.13% 0.15%
C 9138 7930 0 0 0.00% 0.00%
D 9138 7930 44 44 0.48% 0.55%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 1 162 29474 149.62 937 917 190.9
A 8 15 26178 132.35 937 917 190.9
A 14 111 15813 78.05 937 917 190.9
B 3 64 51170 282.7 947 923 177.7
B 0 189 38449 211.13 947 923 177.7
B 10 245 30072 164.0 947 923 177.7
C 3 233 123741 570.19 927 933 215.4
C 8 128 11236 47.84 927 933 215.4
C 13 61 6725 26.89 927 933 215.4
D 9 68 137646 619.36 913 885 220.8
D 13 189 134908 606.96 913 885 220.8
D 1 52 66138 295.52 913 885 220.8

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter